(very simplified answer to a complex area)
The Dow indices and others represent valuation of a set basket of company stocks. Hypothetically, is a company's worth were entirely in its public stock shares, and the company had 10000 shares in the public domain priced at $100 per share, the company's perceived value is 10000*100 or $1,000,000 (a million dollars).
As with other commodities, when many wish to sell but few wish to buy, the selling price see downward pressure, and vice versa.
So for a down day, pressure was being seen in the sell direction, theoretically indicating less confidence in the product for any number of possible reasons.
So, during such a sell off, as the price paid (effectively for representative pieces of companies) drops, the value of those companies is diminished.
The general hope is that with increases in worker productivity and sales, a company's net worth will increase in the long run, on average. This is the pattern seen in the Stock Market indices over the past decades.
On September 29, 2008, the Dow dropped 777.68 points.
DOW INDU aT END OF 2008 (12/31) WAS DOWN 4488.43 FROM END OF 2007
Dow 10,917.51 -504.48 (-4.42%)
It closed at 9547.22 up 50 points
The Dow jones Industrial Average usually drops by 38 points during Black Monday. This example can be seen in the Wall Street Crash of 1929 where figures drop by nearly 13%.
The Dow Jones Average is Down 15 Dollars
The Dow stock market closed 266 points down on the 15th of April 2013. The Dow had already fallen 146 points when the Boston Marathon explosions took place at approximately 3pm, after this it fell another 120 points.
If they do have stocks in the Dow Jones, they will lose invested money.
1987 On Black Monday the Dow Jones Plunged down the drain a whopping 508 points and then the economy starts to go down with it.
Greg Dow goes by CBJamocha Yellow, Gtd Rea, and DOW chicka dow dow.
Marlon Dow goes by Buttons.
Matthew Dow goes by Matt.
On September 29, 2008, the Dow dropped 777.68 points.
Charles Dow was the co founder of Dow Jones News.
the song is called Dow by Jay Sean the part that you are talking about is where lil Wayne sings
DOW INDU aT END OF 2008 (12/31) WAS DOWN 4488.43 FROM END OF 2007
Point are equal to the US DOLLAR so 50 points is equal to $50.00 the DOW JOW INDUSTRIAL AVERAGE tracks 30 of the larges companies so when the market is reporting its down 30 points the overal average stock is down about $30.00